CN102268164A - Micro-foaming polystyrene all-plastic wood-like material and production method thereof - Google Patents
Micro-foaming polystyrene all-plastic wood-like material and production method thereof Download PDFInfo
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- CN102268164A CN102268164A CN 201110222462 CN201110222462A CN102268164A CN 102268164 A CN102268164 A CN 102268164A CN 201110222462 CN201110222462 CN 201110222462 CN 201110222462 A CN201110222462 A CN 201110222462A CN 102268164 A CN102268164 A CN 102268164A
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Abstract
A micro-foaming polystyrene all-plastic wood-like material and a production method thereof relate to an all-plastic wood-like material. The invention provides a micro-foaming polystyrene all-plastic wood-like material which can improve the waterproof moistureproof performance, reduce material density and brittleness, increase the mechanical strength, and prolong the service life, does not contain wood components, and is low in carbon and environment friendly, and also provides a production method thereof. The all-plastic wood-like material comprises the following components: 100 parts of polystyrene, 20-40 parts of high-impact polystyrene, 10-15 parts of resin, 2-5 parts of inorganic filling materials, 0.5-1.5 parts of foaming agents, 0.5-2 parts of foam diameter adjusting agents, 0.5-2 parts of colorants, 1.5-3 parts of additives. A mixture A is obtained by mixing the foaming agent, the foam diameter adjusting agent, the additive, and the colorant; the resin and the inorganic filling material are dried; a mixture B is obtained by proportionally mixing the polystyrene, the high-impact polystyrene, the resin, the mixture A and the inorganic filling material; and the product is obtained by performing extrusion, granulation and molding of the mixture B.
Description
Technical field
The present invention relates to a kind of overall plastic imitated wood material, especially a kind of overall plastic imitated wood material of polystyrene that adopts the little foaming technique preparation of thermal equilibrium.
Background technology
Little foam process is meant in the plastics-production processing and other fields, utilizes foaming technique, at the inner pore that forms even small sealing of raw material.It is advantageous that conservation, reduce extrudate density, can reduce the defective of goods inside simultaneously, overcome the big shortcoming of part material fragility, improve goods toughness, elevating gear intensity; The pore of sealing improves the waterproof and dampproof performance of goods simultaneously, widens the use category, increases the service life.Little foaming technique is widely used in the conventional plastic production already, and wood is moulded manufacturing fields such as compound imitated wood material production.
(Su Yang etc. such as Su Yang, the research [J] of the little foaming process of polypropylene PP injection moulding chemistry. modern mechanical, 2007, (05): 77-78) by the little frothing injection process of polypropylene PP chemistry is studied, show that existence is owed bubble, little foaming, crossed the three kinds of states that foam in the little frothing injection process of chemistry, and reach a conclusion: the control to the little foaming process of injection moulding chemistry is the key of preparation high-performance micro-foaming material.
Zhang Zhenghong (Zhang Zhenghong .PVC wood moulds composite microporous foam material extrusion technology research [J]. Zhejiang chemical industry, 2007, (12)) introduced production technology and some precaution that PVC wood is moulded composite microporous foam material extrusion moulding.
Chinese patent CN101153098A discloses a kind of micro foam polystyrene group composite material of wood and plastic and preparation method thereof, and its prescription main component is polystyrene, wood fibre, whipping agent and each analog assistant.But traditional wood is moulded in the compound imitated wood material because of there being the problem of resin and wood fibre consistency, cell size, and distributing homogeneity is difficult to better control, and subsurface defect is more, influences the waterproof and dampproof performance and the physical strength of material.
Summary of the invention
, problems such as abscess-size difference big, skewness relatively poor that purpose of the present invention is intended at the main ingredient consistency of existing overall plastic imitated wood material, a kind of waterproof and dampproof performance of improving is provided, reduce density of material and fragility, the raising physical strength also increases the service life, and material does not contain wood substance component, overall plastic imitated wood material of the micro foam polystyrene of low-carbon environment-friendly and production method thereof.
The proportioning that the composition of the overall plastic imitated wood material of described micro foam polystyrene reaches by mass ratio is: polystyrene (PS) 100, high-impact polystyrene (HIPS) 20～40, resin 10～15, inorganic filling material 2～5, whipping agent 0.5～1.5, abscess conditioning agent 0.5～2, tinting material 0.5～2, auxiliary agent 1.5～3.
Described resin can be selected from least a in acrylonitrile-butadiene-styrene (ABS) segmented copolymer (ABS) resin, acrylonitritrile-styrene resin (AS) and the polymethylmethacrylate (PMMA) etc.
Described inorganic filling material can be selected from CaCO
3Nano particle and SiO
2Nano particle, or CaCO
3Nano particle and SiC nano particle, or CaCO
3Nano particle and BaSO
4Nano particle etc.; Press mass ratio, CaCO
3Nano particle is 1～3, SiO
2Nano particle or SiC nano particle or BaSO
4Nano particle is 1～2.
Described whipping agent comprises endothermic blowing agent and heat release type whipping agent, and its mass ratio is an endothermic blowing agent: heat release type whipping agent is (1～2): (1～2), wherein endothermic blowing agent can be selected from volatile salt, bicarbonate of ammonia, NaHCO
3Whipping agent, Cellmic C 121 mixture (Hydrocell) whipping agent, citric acid and sodium bicarbonate mixture (Hydrocerolbih) whipping agent, at least a in the CF series whipping agent (agent of polystyrene special-purpose foaming) etc.; Heat release type whipping agent can be selected from least a in Cellmic C 121 (AC) whipping agent, azoformamide potassium formiate (AP) whipping agent etc.
Described CF series whipping agent can be selected from a kind of in (Britain HENLEY brand whipping agents) such as CF-5505 whipping agent, CF-210 whipping agent, CF-420 whipping agents.
Described abscess conditioning agent can be selected from least a in amido silicon oil and the polyacrylate(s) (ACR) etc.
Described auxiliary agent comprises UV light absorber, lubricant, banksia rose agent and dispersion agent, presses mass ratio, and UV light absorber is 0.2～0.5, and lubricant is 0.2～0.5, and banksia rose agent is 0.4～0.7, and dispersion agent is 0.7～1.3; Described UV light absorber can be selected from Octabenzone (UV-531) etc.; Described lubricant is optional from polyethylene wax, lithium complex-soap base grease, Zinic stearas, calcium stearate, at least a in the palm wax etc.; Described banksia rose agent can be selected from a kind of in cloud wood Radix Aucklandiae oil, sandalwood Radix Aucklandiae oil, the Camphorwood sesame oil etc.; The optional self-contained end carboxylated polypropylene acid butyl ester of described dispersion agent (PBACOOH) oligopolymer etc.
Described tinting material can be selected from least a in mineral dye, the pigment dyestuff etc., a kind of in the optional autoxidation zinc of described mineral dye, red iron oxide, the carbon black composite pigment etc., described pigment dyestuff can be selected from least a among diarylide yellow, quinacridone violet, the permanent yellow HR etc.
The production method of the overall plastic imitated wood material of described micro foam polystyrene may further comprise the steps:
1) whipping agent, abscess conditioning agent, auxiliary agent are mixed with tinting material compound A;
2) with resin and inorganic filling material drying;
In step 2) in, described drying can be at 70～90 ℃ of down dry 1～3h.
3) by proportioning with polystyrene (PS), high-impact polystyrene (HIPS), resin and compound A mix with inorganic filling material compound B;
4) with compound B extruding pelletization, moulding gets the overall plastic imitated wood material of micro foam polystyrene.
In step 4), described extruding pelletization can be through the twin screw extruder extruding pelletization, and the temperature that granulation is extruded can be 150～170 ℃; Described moulding can be extruded the pellet of gained machine-shaping or be passed through the injection-moulding device injection moulding in forcing machine; The described extrusion temperature of extruding machine-shaping can be 150～200 ℃, and the screw speed of forcing machine can be 6～10r/min; The injection pressure of the injection-moulding device of described injection moulding can be 60～120MPa, and dwell pressure can be 30～40MPa, and nozzle temperature can be 170～200 ℃.
The invention provides the overall plastic environmental protection imitated wood material of a kind of extrusion moulding polystyrene based on the little foaming technique of thermal equilibrium, by little foam process is applied to overall plastic imitated wood material, avoided the main ingredient compatibility problem, solve traditional wood and moulded in the imitated wood material problems such as the abscess-size difference is big, skewness, further improved the waterproof and dampproof performance of imitated wood material, reduced density of material and fragility, the raising physical strength also increases the service life, and material does not contain wood substance component, low-carbon environment-friendly.
The present invention is by adopting heat absorbing type and the composite use of heat release type whipping agent, heat balance technology when realizing the whipping agent decomposition, help the temperature control in the foaming process, make foam structure and size be easy to control, inner local superheating when preventing to use merely a kind of whipping agent (particularly heat release type whipping agent) decomposition liberated heat to make outer the cooling, viscosity reduces, and decomposition gas is easily overflowed, and causes abscess inhomogeneous.The even foam structure of Xing Chenging can be subjected to external force at material and make time spent absorption and energy dispersive simultaneously, helps to improve the section bar mechanical property.Its little foam theory is that by extruding in machine-shaping or the injection molding process, whipping agent produces gas and then foaming, nanometer CaCO reach decomposition temperature in melt after
3With SiO
2Can play nucleogenesis this moment, helps to form bubble.Control melt flow and pressure, make melt pressure greater than pressure in bubbles and don't as for broken bubble, this moment, the abscess conditioning agent played a key effect, by regulate melt viscosity when making foaming the outside turgor pressure of gas reach running balance with the pressure of cell wall place melt, help forming even tiny bubble.After the melt of partial foaming enters foam device by extrusion device, sharply cool off and controlled reduced pressure operation, make open bubble have little time to expand and just be fixed, promptly obtain inner many bubbles and ganoid goods.The present invention is applied to overall plastic imitated wood material with little foam process, avoided the main ingredient compatibility problem, solve traditional wood and moulded in the imitated wood material problems such as the abscess-size difference is big, skewness, further improved the waterproof and dampproof performance of imitated wood material, reduce density of material and fragility, the raising physical strength also increases the service life, and material does not contain wood substance component, low-carbon environment-friendly.
Description of drawings
Fig. 1 is that the nearly surface portion of sample produced of embodiment 1 is through 50 times of enlarged diagrams of micro image analysis system.
Fig. 2 is that the sample produced of embodiment 2 is through 50 times of enlarged diagrams of micro image analysis system.
Fig. 3 is that the sample produced of embodiment 3 is through 50 times of enlarged diagrams of micro image analysis system.
Fig. 4 is that the sample produced of embodiment 4 is through 50 times of enlarged diagrams of micro image analysis system.
Embodiment
The invention will be further described below by embodiment.
Embodiment 1
With 1 part of nano SiC, 1 part of nano-calcium carbonate, 10 parts of mixing of ABS resin, in drying machine in 80 ℃ of dry 2h, simultaneously with sodium bicarbonate/0.5 part of AC composite foamable agent (1: 1), 0.5 part of ACR abscess conditioning agent, 0.2 part of UV-531 (UV light absorber), 0.2 part of polyethylene wax/lithium complex-soap base grease (1: 1), 0.4 part of sandalwood Radix Aucklandiae oil, butyl polyacrylate PBACOOH0.7 part, 0.5 part of mixing of zinc oxide/red iron oxide/carbon black (2: 2: 1), then with above-mentioned two groups of mixtures and PS100 part, HIPS25 part is mixed, and with final mixture extruding pelletization in twin screw extruder, prilling temperature is controlled at 160～170 ℃, at last the pellet of gained is extruded machine-shaping under 180～200 ℃ in forcing machine, extruder screw rotating speed 8r/min.
The density of bond material detects related mechanical properties, the results are shown in Table 1, table 2.Found that the little foaming technique of thermal equilibrium further reduces density of material, has improved the material shock strength, improved the waterproof and dampproof performance of imitated wood material, the raising physical strength also increases the service life.The foaming degree of sample and corresponding cell density are seen Fig. 1, and as shown in Figure 1, it is few that sample makes that near surperficial part foam this part contains abscess quantity, in the actual production, the difficult control of surface stress is influenced by it during skinning, a small amount of abscess can break, and it is bigger that experiment records density, is 788.7kg/m
3, and cell orientation is obvious.
Embodiment 2
With nanometer BaSO
42 parts, 2 parts of nano-calcium carbonates, AS/PMMA resin 13 parts (8: 5) mixes, in drying machine in 80 ℃ of dry 2h.Simultaneously with 1 part of Hydrocell/AP composite foamable agent, 1 part of amido silicon oil abscess conditioning agent, 0.3 part of UV-531 (UV light absorber), 0.3 part of calcium stearate/Zinic stearas (1: 1), 0.4 part of cloud wood Radix Aucklandiae oil, 1 part of butyl polyacrylate PBACOOH, diarylide yellow/quinacridone violet/1 part of mixing of permanent yellow HR (4: 2: 4), then with 100 parts of above-mentioned two groups of mixtures and PS, 30 parts of mixing of HIPS, with final mixture extruding pelletization in twin screw extruder, prilling temperature is controlled at 150～160 ℃, at last the pellet of gained is extruded machine-shaping under 160～180 ℃ in forcing machine, extruder screw rotating speed 10r/min.
The density of bond material detects related mechanical properties, the results are shown in Table 1, table 2.Sample foaming degree and corresponding cell density are seen Fig. 2, as shown in Figure 2, observe through 50 times of amplifications, as seen seal even foam structure, and this sample rate is 643.8kg/m
3, in the unit surface, effective abscess quantity＞25.
Embodiment 3
With nanometer SiO
22 parts, 3 parts of nano-calcium carbonates, ABS/AS/PMMA resin 15 parts (6: 6: 3) mixes, in drying machine in 80 ℃ of dry 2h.Simultaneously with 1.5 parts in blowing agent H ydrocerol/AC/ bicarbonate of ammonia compound (7: 5: 3), 2 parts of ACR/ amido silicon oil abscess conditioning agents (1: 1), 0.5 part of UV-531 (UV light absorber), 0.5 part of polyethylene wax, 0.7 part of Camphorwood sesame oil, butyl polyacrylate PBACOOH1.3 part, zinc oxide/red iron oxide/carbon black, diarylide yellow, quinacridone violet, 1.5 parts of mixing of permanent yellow HR (2: 3: 1: 4: 2: 3), then with above-mentioned two groups of mixtures and PS100 part, HIPS35 part is mixed, with final mixture extruding pelletization in twin screw extruder, prilling temperature is controlled at 160～170 ℃, at last the pellet of gained is extruded machine-shaping under 180～200 ℃ in forcing machine, extruder screw rotating speed 7r/min.
. the density of bond material, related mechanical properties is detected, the results are shown in Table 1, table 2.Sample foaming degree and corresponding cell density are seen Fig. 3, and as shown in the figure, in the unit surface, effectively abscess quantity is few than embodiment 2, nearly 20, thereby density is big than embodiment 2, is 765.7kg/m
3
Embodiment 4
With nanometer SiO
21 part, nanometer BaSO
41 part, 3 parts of nano-calcium carbonates, ABS/PMMA resin 15 parts (3: 2) mixes, in drying machine in 80 ℃ of dry 2h.Simultaneously with 1.5 parts of whipping agent volatile salt/CF-5505/AC compound (2: 2: 1), 2 parts of ACR/ amido silicon oil (1: 1) compound vacuole pore regulators, 0.5 part of UV-531 (UV light absorber), 0.5 part of calcium stearate/polyethylene wax (1: 2), 0.7 part of Camphorwood sesame oil, butyl polyacrylate PBACOOH1.3 part, zinc oxide/red iron oxide/carbon black, diarylide yellow, quinacridone violet, 1.5 parts of mixing of permanent yellow HR (2: 3: 1: 4: 2: 3), then with above-mentioned two groups of mixtures and PS100 part, HIPS35 part is mixed, with final mixture extruding pelletization in twin screw extruder, prilling temperature is controlled at 160～170 ℃, and the pellet with gained passes through horizontal injection press injection moulding, 180～195 ℃ of nozzle temperatures at last, injection pressure 80-120MPa, dwell pressure 30-40MPa.
The density of bond material detects related mechanical properties, the results are shown in Table 1, table 2.Sample foaming degree and corresponding cell density are seen Fig. 4, as shown in Figure 4, can be observed tangible closed-cell structure, and the abscess compactness, and density is 775.1kg/m
3The comparative example 2,3, illustrate in goods inside (non-skinning part), utilize foaming technique extrudate density can be controlled at 650～750kg/m
3
Table 1
Table 2
Claims (10)
1. overall plastic imitated wood material of micro foam polystyrene, it is characterized in that the proportioning that its composition reaches by mass ratio is: polystyrene 100, high-impact polystyrene 20～40, resin 10～15, inorganic filling material 2～5, whipping agent 0.5～1.5, abscess conditioning agent 0.5～2, tinting material 0.5～2, auxiliary agent 1.5～3.
2. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1 is characterized in that described resin is selected from least a in acrylonitrile-butadiene-styrene (ABS) block copolymer resin, acrylonitritrile-styrene resin and the polymethylmethacrylate.
3. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1 is characterized in that described inorganic filling material is selected from CaCO
3Nano particle and SiO
2Nano particle, or CaCO
3Nano particle and SiC nano particle, or CaCO
3Nano particle and BaSO
4Nano particle; Press mass ratio, CaCO
3Nano particle is 1～3, SiO
2Nano particle or SiC nano particle or BaSO
4Nano particle is 1～2.
4. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1, it is characterized in that described whipping agent comprises endothermic blowing agent and heat release type whipping agent, its mass ratio is an endothermic blowing agent: heat release type whipping agent is (1～2): (1～2), wherein endothermic blowing agent is selected from volatile salt, bicarbonate of ammonia, NaHCO
3Whipping agent, Cellmic C 121 mixture whipping agent, citric acid and sodium bicarbonate mixture whipping agent, at least a in the CF series whipping agent; Heat release type whipping agent is selected from least a in azodicarbonamide foaming agent, the azoformamide potassium formiate whipping agent.
5. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 4 is characterized in that described CF series whipping agent is selected from a kind of in CF-5505 whipping agent, CF-210 whipping agent, the CF-420 whipping agent.
6. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1 is characterized in that described abscess conditioning agent is selected from least a in amido silicon oil, the polyacrylate(s).
7. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1, it is characterized in that described auxiliary agent comprises UV light absorber, lubricant, banksia rose agent and dispersion agent, press mass ratio, UV light absorber is 0.2～0.5, lubricant is 0.2～0.5, banksia rose agent is 0.4～0.7, and dispersion agent is 0.7～1.3; Described UV light absorber is selected from Octabenzone; Described lubricant is selected from polyethylene wax, lithium complex-soap base grease, Zinic stearas, calcium stearate, at least a in the palm wax; Described banksia rose agent is selected from a kind of in cloud wood Radix Aucklandiae oil, sandalwood Radix Aucklandiae oil, the Camphorwood sesame oil; Described dispersion agent is selected from and contains end carboxylated polypropylene acid butyl ester oligopolymer.
8. the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1, it is characterized in that described tinting material is selected from least a in mineral dye, the pigment dyestuff, described mineral dye is selected from a kind of in zinc oxide, red iron oxide, the carbon black composite pigment, and described pigment dyestuff is selected from least a among diarylide yellow, quinacridone violet, the permanent yellow HR.
9. the production method of the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 1 is characterized in that may further comprise the steps:
1) whipping agent, abscess conditioning agent, auxiliary agent are mixed with tinting material compound A;
2) with resin and inorganic filling material drying;
3) by proportioning with polystyrene, high-impact polystyrene, resin and compound A mix with inorganic filling material compound B;
4) with compound B extruding pelletization, moulding gets the overall plastic imitated wood material of micro foam polystyrene.
10. the production method of the overall plastic imitated wood material of a kind of micro foam polystyrene as claimed in claim 9 is characterized in that in step 2) in, described drying is at 70～90 ℃ of down dry 1～3h;
In step 4), described extruding pelletization is preferably through the twin screw extruder extruding pelletization, and the temperature that granulation is extruded is preferably 150～170 ℃; Described moulding is preferably extruded the pellet of gained machine-shaping or is passed through the injection-moulding device injection moulding in forcing machine; The described extrusion temperature of extruding machine-shaping is preferably 150～200 ℃, and the screw speed of forcing machine is preferably 6～10r/min; The injection pressure of the injection-moulding device of described injection moulding is preferably 60～120MPa, and dwell pressure is preferably 30～40MPa, and nozzle temperature is preferably 170～200 ℃.
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